Carbureter.



Nrrnn Frames `Airnnrr @tribut ALLAN'CAMERON SARGENT, OF GRANITEVILLE, MASSACHUSETTS.

CRBURETER.

SPECIFICATION forming part of Letters Batent No. 680,941, dated August 20, 1901.

Application filed April 16, 1901.

To @ZZ whom, t may conceive.'

Be it known that I, ALLAN CAMERON SAR- GENT, a citizen of the United States, residing at Graniteville, in the county of Middlesex, State of Massachusetts, have invented a certain new and useful Improvement in Carbureters, of which the following is a specication, reference being had therein to the accompanying drawings.

One of the main objects of my invention is to produce a simple and efficient carbureting apparatus, more especially designed for use in automobiles, although equally adapted to the enrichment of air or gas for illuminating purposes, and to other analogous uses.

Theinvention will first be described in connection with the accompanying drawings, the latter illustrating the best form in which I have thus far embodied the invention, after which its essential characteristics will be particularly pointed out and distinctly defined in the claims at the close of this specification.

In the drawings, Figure l is a middle vertical longitudinal seetion through the apparatus. Fig. 2 is an end view of the same, taken from the right-hand side in Fig. l, the shell of the float-chamber being partially broken away. Fig. 3 is a top View partially in section. Fig. 4 is a section on the lineal!c of Fig. 1. Fig. 5 is 'a horizontal section ofthe mixing-valve. Fig. 6 is a plan of the same.

In general inycarbureter may be characterized as mainly comprising three chambers.

In thedrawings the numeral l designates the lower main chamber, the same being designed to hold a quantity of liquid gasolene. Thislast enters the chamber through an opening 2, communicating with a ioat or supply chamber 3, the said opening being provided with a wire screen 4. In the supply-chamber is located a iioat 5, which presses upward against a knob or enlargement 6 at the lower end of the stem of the needle-valve 8. The needle-valve 8 is located in a gasolene-inlet pipe 9 and cooperates with a valve-seat lO therein. The pipe 9 terminates in a removable cap 1l, whereby access may be had to free the needle-valve in oase it fails to separate from its seat on the descent of the float. Gasolene is supplied to the pipe 9 through a lateral connection 12. This described construction, whereby I obtain a separation of Serial No. 56,099. (No model.)

the supply or float chamber from the gasolene -receptacle, their connection by a submerged opening, and the interposition be understood, peculiar conditions are present when a carbureter is employed in a motorvehicle. The jarring, tilting, and irregular movements of the latter interfere with the satisfactory working of many devices that may be successfully employed for stationary use. It is my especial purpose to avoid many of the difficulties hitherto encountered in adapting carbureters to motor-vehicles.

Above the gasolene-1eceptacle and completely separated therefrom, except through the communication established bya series of wick-tubes 13, is located the vaponchamber 14. Vere the chambers separated from each other simply by a perforated partition or the like, in such case any considerable degree of inclination or violent motion of the vehicle on which the carbureter is mounted would be apt to cause the gasolene to flood the vaporchamber. By making the wicktubes, which constitute the only means of communication between the gasolene and vapor-chambers, of considerable length no motion or inclination of the carbureter occasioned by practical and ordinary use is sufficient to throw liquid gasolene into the vapor-chamber.

Each of the wick-tubes 13 just described extends substantially across from side to side of the vapor-chamber and each contains a broad wick designated 15. An advantageous arrangement of such wicks is that of endless bands each passing over one of a series of rods 16, fixed at the top of the vapor chamber, and under one of a series of rods 17, fixed at or near the bottom of the gasolene-receptacle, the corresponding rods of each series being located in line with the wick-tubes themselves, so that theparallel portions of each web run through the same wick-tube. The

general function of the wicks, as will be un IOO lower receptacle and convey the same by capillary action into the vapor-chamber', Where such gasolene is held in the meshes of the Wicks in a finely-subdivided state, ready to be Withdrawn as vapor by the aspiration of the engine.

The wicks constitute porous diaphragms extending across the vapor chamber and through which the current of air or gas to be carbureted is caused to pass. This insures that all the air introduced into the vaporchamber shall pass through the Wicks and become thoroughly charged with vapor before being withdrawn from the vapor-chamber, and at the same time the arrangement permits of the freest possible movement of air consistent with this result.

To permit admission of air into the vaporchamber, an inlet-pipe 2O is provided at one end thereof, the said inlet-pipe being furnished with a check-valve 2], opening inwardly. The inlet-pipe 20 has a diaphragm 22, .fixed within it near its inner end, the said diaphragm having a central perforation through which projects the stem 23 of the valve and having also surrounding perforations 2a for the passage of air. 0n the stem 23 is fixed a second diaphragm 25, having similar perforations. Between the two diaphragms is confined a spiral spring 26 of sufficient strength to hold the valve 2O upon its seat, except when a partial vacuum is produced in the vapor-chamber.

The vapor-outlet pipe 27 is located opposite the air-'inlet valve and is provided with the usual screens 271 to prevent firing back. The said pipe leads to a mixing-valve 28, having an air-inlet 29 and an outlet 30, leading to the engine. The mixing-valve isa three-way valve, the plug thereof being cut away at one side, as indicated at 3l. wIn the position of the said plug which is shown in Fig. 3 only vapor will be taken into the engine, the airinlet 29 being entirely closed. In the position shown in Fig. 5 only air will be taken in, the vapor-inlet being completely shut. In intermediate positions of the plug any desired mixture of air and vapor may be obtained.

32, Fig. 6, is the handle for operating the mixing-valve.

The gasolene in the lower receptacle may be heated by the exhaust from the engine or the like, introduced through the loop of pipe 33, located in the lower part of the receptacle, thus accelerating the evaporation of the gasolene.

What I claim is- 1. A carbureter comprising, essentially, a gasolene-chamber, a vapor-chamber above the eenen same having an air-inlet at one end thereof and a carbureted-air outlet at the other end thereof, Wick-tubes of considerable length ex-` tending vertically between said chambers, and wicks extending through said wick-tubes into said chambers and extending across the entire Width of the vapor-chamber to form a series of transverse diaphragms through which the air must penetrate on its way from the inlet to the outlet.

2. A carbureter comprising, essentially, a gasolene-chamber, avapor-chamber above the same having an air-inlet at one end thereof and a carbureted-air outlet at the other end thereof,Wick-tubes connecting said chambers, rods in both chambers in line with the respective wick-tubes, and endless wicks extended respectively through the respective wicktubes and supported by the rods in line therewith, the said wicks extending across the entire width of the vapor-chamber to form a series of double transverse diaphragms through which the air must penetrate on its way from the inlet to the outlet.

3. A carbureter comprising, essentially, a gasolene-chamber, a vapor-chamber above the same having at one end thereof an air-inlet provided with a normally-closed spring-actuated valve and at the other end thereof having a carbureted-air outlet, wick-tubes of considerable length extending vertically between said chambers, and wicks extending through said wick-tubes' into said chambers and cxtending across the entire width of the vaporchamber to form a series of transverse dia; phragms through which the air must penetrate on its way from the inlet to the outlet.

4. A carbureter comprising, essentially, a separate iioat-chamber, a submerged opening between the same and the gasolene-chamber, a float in said heat-chamber, a valve for admitting gasolene operated by the float, a gasolene-chamber, a vapor-chamber above the same having an air-inlet at one end thereof and a carbureted-air outlet at the other end thereof, wick-tubes of considerable length extending vertically between said chambers,

and wicks extending through said wick-tubes into said chambers and extending across the entire width of the vapor-chamber to form a series of transverse diaphragms through which the air must penetrate on its way from the inlet to the outlet.

In testimony whereof I affix my signature in presence of two Witnesses.

ALLAN CAMERON SARGENT.

Witnesses:

JAMES MINTER, JAMES M. SARGENT.

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